fix build.

  libsepol.check_assertion_helper: neverallow on line 166 of external/sepolicy/domain.te (or line 5056 of policy.conf) violated by allow recovery unlabeled:file { create };
  Error while expanding policy
  make: *** [out/target/product/generic/obj/ETC/sepolicy.recovery_intermediates/sepolicy.recovery] Error 1

(cherry picked from commit 3508d611)

Change-Id: I5efa1f2040fc40df1df44ed1b8e84b6080cb8f74